Check Checkbox in radcombobox itemtemplate

[adam]

I used some code found on this forum to implement checkboxes in a combobox itemtemplate. everything works fine apart from i want the saved items checkbox to be checked when the dropdown is viewed.
any ideas?

here is the front end

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="TopFiveArticlesSelector.ascx.cs" Inherits="CMSFormControls_TopFiveArticlesSelector" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
 <script type="text/javascript">
            var hiddenfld = ("<%= this.Hidden.ClientID %>");
            var cancelDropDownClosing = false;

            function StopPropagation(e)
            {
                //cancel bubbling
                e.cancelBubble = true;
                if (e.stopPropagation)
                {
                    e.stopPropagation();
                }
            }

            function onDropDownClosing()
            {
                cancelDropDownClosing = false;
            }

            function onCheckBoxClick(chk)
            {
                var combo = $find("<%= RadComboBox2.ClientID %>");
                //holds the text of all checked items
                var text = "";
                //holds the values of all checked items
                var values = "";
                //get the collection of all items
                var items = combo.get_items();
                //enumerate all items
                for (var i = 0; i < items.get_count(); i++)
                {
                    var item = items.getItem(i);
                    //get the checkbox element of the current item
                    var chk1 = $get(combo.get_id() + "_i" + i + "_chk1");
                    if (chk1.checked)
                    {
                        text += item.get_text() + ",";
                        values += item.get_value() + ",";
                        //alert(item.get_value());
                    }
                }
                //remove the last comma from the string
                text = removeLastComma(text);
                values = removeLastComma(values);


                if (text.length > 0)
                {
                    //set the text of the combobox
                    combo.set_text(text);
                    document.getElementById(hiddenfld).value = values;

                }
                else
                {
                    //all checkboxes are unchecked
                    //so reset the controls
                    combo.set_text("");
                }
            }

            //this method removes the ending comma from a string
            function removeLastComma(str)
            {
                return str.replace(/,$/,"");
            }

</script>
<asp:HiddenField ID="Hidden" runat="server"/>
 <telerik:RadComboBox ID="RadComboBox2" runat="server" Width="400" AllowCustomText="true" DataValueField="DocumentID" DataTextField="Title" EmptyMessage="Select upto 5 articles" OnClientDropDownClosed="onDropDownClosing" >
    <ItemTemplate>
        <div onclick="StopPropagation(event)" class="combo-item-template">
            <asp:CheckBox runat="server" ID="chk1" Text='<%#Eval("Title")%>' onclick="onCheckBoxClick(this)" />
        </div>
    </ItemTemplate>
</telerik:RadComboBox>

here is the backend

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using CMS.SiteProvider;
using CMS.CMSHelper;
using CMS.GlobalHelper;
using Telerik.Web.UI;

public partial class CMSFormControls_TopFiveArticlesSelector : CMS.FormControls.FormEngineUserControl
{
    private DataTable dt = null;

    protected void Page_Load(object sender, EventArgs e)
    {
        ArticleItems();
    }

    /// <summary>
    /// Gets or sets field value
    /// </summary>
    public override Object Value
    {
        get
        {
            return Hidden.Value.ToString();
        }
        set
        {
            // Ensure drop down list options
            ArticleItems();

            Hidden.Value = System.Convert.ToString(value);

            string[] RelatedID = Hidden.Value.Split(new char[] { ',' });

            for (int i = 0; i < dt.Rows.Count; i++)
            {
                for (int e = 0; e < RelatedID.Length; e++)
                {
                    if (dt.Rows[i]["DocumentId"].ToString() == RelatedID[e].ToString())
                    {
                        RadComboBox2.Text += dt.Rows[i]["Title"].ToString() + ",";
                        CheckBox checkbox = (CheckBox)RadComboBox2.Items[i].FindControl("chk1");
                        checkbox.Checked = true;
                    }
                }
            }

        }
    }

    /// <summary>
    /// Returns true if some color is selected. If no, it returns false and displays an error message.
    /// </summary>
    public override bool IsValid()
    {
        if (RadComboBox2.Text != "")
        {
            return true;
        }
        else
        {
            // Set form control validation error message
            this.ValidationError = "Please Select Tags For This Article";
            return false;
        }
    }

    protected void ArticleItems()
    {
        DataSet ds = TreeHelper.SelectNodes("/%", false, "CriticalCare.Conclusion;CriticalCare.Literature;CriticalCare.Theory", "", " ", -1, false);
        dt = new DataTable();

        if (!DataHelper.DataSourceIsEmpty(ds))
        {
            for (int i = 0; i < ds.Tables.Count; i++)
            {
                dt.Merge(ds.Tables[i]);
            }
            RadComboBox2.DataSource = dt;
            RadComboBox2.DataBind();

            for (int i = 0; i < dt.Rows.Count; i++)
            {
                CheckBox checkbox = (CheckBox)RadComboBox2.Items[i].FindControl("chk1");
                checkbox.ToolTip = dt.Rows[i]["DocumentID"].ToString();
            }
        }
    }
}

[Simon]

Hi adam,

Your code looks fine. Can you please verify whether the code checking the CheckBoxes actually executes, i.e.

if (dt.Rows[i]["DocumentId"].ToString() == RelatedID[e].ToString())

is true?

Greetings,
Simon
the Telerik team